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VulnerabilityPublished Updated

CVE-2026-74457: Linux kernel · can: peak_usb: add bounds check for USB channel index

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in f97b7e5e1cdaae15cd95b3a360028c7929664969 : patch Linux kernel soon.

Data as of 6 Nov 2026, 18:03 UTC

Severity
High

Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD

Thin evidence

One scorer or none
CISA SSVC
Exploitation
No evidence of active exploitation and no public proof of concept
Automatable
Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact
Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-06.

Patch
Available – fixed in f97b7e5e1cdaae15cd95b3a360028c7929664969, 39132f166ca8ce00ae60d8a9068e06a60943cc4b, 825c903ca3c98cd0cf0e3de8ab8f2604a5339b3f +5

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 15 Aug 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ d8a199355f8f8a0797c00d98788d7282c9ea38bd, < f97b7e5e1cdaae15cd95b3a360028c7929664969
Fixed in
  • f97b7e5e1cdaae15cd95b3a360028c7929664969
LinuxLinuxAffected
  • ≥ d8a199355f8f8a0797c00d98788d7282c9ea38bd, < 39132f166ca8ce00ae60d8a9068e06a60943cc4b
Fixed in
  • 39132f166ca8ce00ae60d8a9068e06a60943cc4b
LinuxLinuxAffected
  • ≥ d8a199355f8f8a0797c00d98788d7282c9ea38bd, < 825c903ca3c98cd0cf0e3de8ab8f2604a5339b3f
Fixed in
  • 825c903ca3c98cd0cf0e3de8ab8f2604a5339b3f
LinuxLinuxAffected
  • ≥ d8a199355f8f8a0797c00d98788d7282c9ea38bd, < 0149fdb50a30944827acf9600a2cc44de0325a7f
Fixed in
  • 0149fdb50a30944827acf9600a2cc44de0325a7f
LinuxLinuxAffected
  • ≥ d8a199355f8f8a0797c00d98788d7282c9ea38bd, < 94fb6fe83ce152532b11b36730b30f3dc0c94217
Fixed in
  • 94fb6fe83ce152532b11b36730b30f3dc0c94217
LinuxLinuxAffected
  • ≥ d8a199355f8f8a0797c00d98788d7282c9ea38bd, < 18b1a868a2cda66fb438007ba47ce5f2484db381
Fixed in
  • 18b1a868a2cda66fb438007ba47ce5f2484db381

AI-suggested

A fix is available and has been applied in the Linux kernel. Users should update to a fixed kernel version containing the patches identified by the provided commit hashes. No additional mitigation is required once the system is updated.

Description

A vulnerability in the Linux kernel's can: peak_usb driver allows a heap out-of-bounds read due to improper bounds checking of a USB channel index derived from device payload data. This can cause a kernel panic in IRQ context. The issue is fixed by adding bounds checks before accessing the array.

References

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